01-1
The human body is a remarkable food processor. As an adult, you may consume (S1) over a ton of food per year and still not gain or lose a pound of body weight. You are (S2) constantly harnessing, and consuming energy through the intricate (S3) mechanism of your body in order to remain in energy balance.
To (S4) maintain a given body weight, your energy input must balance your energy output. However, sometimes the (S5) overall energy balance is upset, and your (S6) normal body weight will either fall or (S7) increase.
